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  1. Spark
  2. SPARK-1237

Implicit ALS is not efficient in computing YtY

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 0.9.1, 1.0.0
    • MLlib
    • None

    Description

      Computing YtY can be implemented using BLAS's DSPR operations instead of generating y_i y_i^T and then combining them.

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            mengxr Xiangrui Meng
            mengxr Xiangrui Meng
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              Updated:
              Resolved: